Brake-beam.



, W. D. FORSYTH.

BRAKE BEAM. APPLICATION FILED NOV. 2, 1910.

Patented July 4, 1911.

m mime.

WILLIAM n. ronsyrn, or ronnosrown, 01110.

BRAKE-BEAM.

Specification of Letters Patent.

Patented July 4., 1911.

Application filed November 2, 1910. Serial No. 590,297.

To all whom it may concern:

. Be it known that I. 'iLrr-nr D. Fonsr'rn. a citizen of the United States. and a resident of Y()tll1f SlOWl1.ll'1 the county of Mahoning and State of Ohio, have invented a new and useful Brake-Beam, of which they following is a. specification.

This invention relates to beams for supporting; the brake-shoes of railway cars, and its object is to provide a strong trussed brake-beam at minimum cost ofconstruction.

In theaccompanying drawing. Figure l is an elevation of a properly rolled bar show ing the slits to permitexpanding the same. F 2 is aplan' of the completed brake-beam. Fig. is an end View of the beam before the strut or head is inserted. Figs is a cross section on the line ll of Fig. 2, on a larger scale. Fig. 5 is a plan on a'larger scale of the strut or head. Fig. 6 is a cross section on a larger scale on the line. 6 of Fig. l. 7

Similar reference characters refer to like parts throughout the several views. I

The brake-beam shown in the drawings is formed from a properly rolled bar, shown in Fig. 1 hav ng ribs-5 and lO. by slitting the same along the lines 7 and 8. thusleaving a beam 9 having a central rib 5. and two side tnembersll'. The middle portions of these side meinbers are then pressed out late'all v and inwardly as shown in Fig. 3, forming' a double truss of which these mem bers 11 form the tension members and the beam 9 the longitudinal compression member. The tension members 11 are stretched by this process. which may be carried out the bar and having flanges to prevent all when the rolled bar is cold or after it is heated. A head or strut 12 ha ing a central web 13 provided with a hole Li to receive the brake-lever. exterior flanges 15. 1t} and 17. and a middle rib 18 adapted to extend between the members 11. is then driven in -between the tension members 11 and the beam 9. The resultant construct-hm has great strength for its weightas the members 11 and 9 are mtegrally connected at their Having now explained my construction, what I claim as mv invention and desire to secure by Letters Patent is;-'

1. A brake-beam comprising a central lo ngitudinal compression member havmg an exterior rib. side tension members having their ends mtegraltherewlth and extending therefrom at an angle and also to' 'ard each other to form the tension membersof a truss, and a head between sald members having flanges engaging the sides of the longitudi- I nal compression and tension members.

2. A brake beam com prising a central lon-' gitudinal compression member and two tension members integrally connected at their ends to the sides of thc'ends of? the central member and forming acute angles therewith and with each other. and a head forming" a strut between said members and having a central opening and side flanges fitting both edges of each of the tension members and the compression member. I

Abrake-beam formed of a bar of metal i slit longitudinallv intermediate its ends and having a plurality of its divided portions spread apartfrom a main portion. in combination with a metal head forming a strut interposed between the spread portions of lateral displacements of the portions of the bar.

In testimony whereof I have hereunto signed my name in the presence of two sub scribing witnesses.

ILLIAM I). FORSYTH.

Witnesses:

Enwnnn N. PAGELSEN, Emzann rn M. BROWN. 

